diff options
Diffstat (limited to '3776/CH6/EX6.9')
| -rw-r--r-- | 3776/CH6/EX6.9/Ex6_9.sce | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/3776/CH6/EX6.9/Ex6_9.sce b/3776/CH6/EX6.9/Ex6_9.sce index 74d9c8acf..1c99a03a6 100644 --- a/3776/CH6/EX6.9/Ex6_9.sce +++ b/3776/CH6/EX6.9/Ex6_9.sce @@ -1,12 +1,12 @@ clear -//Given +//Given M = 50000 //ft-lb , positive bending moment applied -N = 9 // number of steel bars -n = 15 // The ratio of steel to concrete -A_s = 30 //in2 area of steel in concrete +N = 9 // number of steel bars +n = 15 // The ratio of steel to concrete +A_s = 30 //sq.in area of steel in concrete //(10*y)*(y/2) = 30*(20-y) //y**2 + 6*y -120 -//solving quadractic equation +//solving quadractic equation // a = 1 @@ -21,16 +21,16 @@ sol2 = (-b+sqrt(d))/(2*a) y = sol2 // Nuetral axis is found l_1 = y //in- the concrete below nuetral axis is not considered b_1 = 10 //in - width -A_1 = l_1* b_1 //in2 - area of concrete -y_1 = y/2 //in com of the concrete -y_2 = 20-y //in com of the transformed steel -I_1 = b_1*(l_1**3)/12.0 + A_1*((y_1-y)**2) //in^4 parallel axis theorm +A_1 = l_1* b_1 //sq.in - area of concrete +y_1 = y/2 //in com of the concrete +y_2 = 20-y //in com of the transformed steel +I_1 = b_1*(l_1**3)/12.0 + A_1*((y_1-y)**2) //in^4 parallel axis theorem I_2 = A_s*((y_2)**2) //in^4 first part is neglected I_net = I_1 + I_2 //in^4 - the total moment of inertia -c_c= y //in The maximum distance in concrete -stress_concrete = M*12*c_c/I_net //psi - The maximum stress in concrete -c_s= 20- y -stress_steel =n*M*12*c_s/I_net //psi - The maximum stress in concrete +c_c= y //in The maximum distance in concrete +stress_concrete = M*12*c_c/I_net //psi - The maximum stress in concrete +c_s= 20- y +stress_steel =n*M*12*c_s/I_net //psi - The maximum stress in concrete printf("\n The maximum stress in concrete %0.2f psi",stress_concrete) // printf("\n The stress in steel %0.2f psi",stress_steel) -printf("\n answer varies due to rounding off errors")
\ No newline at end of file +// answer varies due to rounding off errors |